Cutting machine



Aug.-21, 1945'. f R. A. M usTERl-:D 2,383,268

CUTTING MACHINE v v Filed March 3. 1942 s sheets-sheet '1 A11g- 21, 1945- R. A..MUsTERED 2,383,208

CUTTING 'MACHINE Filed March 3, 1942 3 Sheets-Sheet 5 Snnentorl fam/1 AKW/a (7l/orge@ attorney ftlilifMustered, Ottawa;` Ill.,` assigxiorv to 5.1 Libbey-Owens-Ford Glass Company. `Toledo,

Although net-necessarily restrietes nieremftiirs invention is espe'eially adaptable to` cutting. inachinas of the so-calledternplate itvpefdesigned'vto cut out;` `shapes of predetermined" outline `from i It is Van! aim `of thisinvention to provide improved `appaia-tus ofthe above Acli-araster whereby i large numbers of `lights of tliesame vsise and'shape can becut fromglass sheetsorplates in a rapid,`

accurate,` and uniform manner.

' Another object is lthe"provisionfo"means for limiting thetravel of theA cutting orlscorin'g mechanism. in a manner to" accurateiy" determine the i position `offthey en'dsof 'theiscoreilineiin relation to theedgeoftheglass-plate;

A further obeet is tnefprovision f cushioning or braking means for `gradually retarding' the movemente'oftheleuttmgmechanism :toward the end ofits travel.- r r 1 j; .i r

Still-another object isitlie `prcrvisionfjof means for receiving ythe getting instrumentaiityat the end of its travel and `for holding it in proper start'- ing position Ibetween outting -cyiclesf' iA i Other objects and advatagesoi the" invention i will becomemore apparent `dnringz`tlie=course of `the following description wlie'nin oonnection with the `actornpanying drawings.

ployed to` `designate like parts' "throughout the" same:` i

Fig.` 1 isa plan View of a glasscutting machine constructed-in accordance witl'ithefirivention; j Fig. `2 is a transversevertical section taken sub- Fig. 3 is` a vertical `section through the cutting `unit taken- 'silbstantiallyy on line 3--3 vin `Fig. 1;l

Fig. 4iis-a plan View of the cutting"` unit inthe position sho f inj Fig.` 1 `withV portions broken Fig. 5 is a vertical section thrdugh the`A holding substantially on line Fig; 6 is*` a vertical 'set'ion .throughI the cutter holding ineanstaken substantially on line lie-6in Fig.1.v' y

` Brienyrstetedgtheeeangmachine disclosed in v' presenti-nvention relates-to improvements i.. i inout/ting erTI'narki-n'gl machines yanclniore -particularly` to apparatus for @scoring glass sl'ieets or` platesil i :l i. l" uHjl.

the drawings comprisesia Snppo:ting.structure .2D

hevmgeeeeeianee therewith.avertieauy movable tablel l `upon which aglas`s`plate` 2.2 is` supported. during theI cutting operation. Positioned. .above `the table 2 Ir in .vertically spaced `relation is alfierie zontally arranged track template 23, ofthesame configuration `as `the shape or form it isi desired to frorneitlie.glassipla-.te` Autting umtfdesignatedin its entin'etyl by the numeral Miami `provided with a `cutting tool Zhilig. `Il) is-molmted upon the template 23, being adaptedtotravel aroundithe template andto beguided'thereby to "score-the glass plate 22 alongfthe line fof cut indiand positionedint-he `path ofl the cutting; unit Z4, at `opposite ends of -its cutting stroketare adjustablestop means 2l ande, and' associated with the `I stop 21 are a bur-nperory brake 2da-nd a receiving i and retaining device 38, also adaptedfto-engage vthe outtingunit" atV one end-of its travel.

Theta/ble 2l is normallyin the lower-ed'position 4indicated `in broken lines in Fig. -2,` Aand `While inthis lposi-tionthief*glass pla-te 22 to be fscoredis. placed on the-ftableand the-cut `plate `issiiliselquently removed therefrom. ,-I-Iovvever,l during the i surface of theglass plate Eri-finto operative con-` i. stantially rectangular;horizontaliframefformed Inthedrawings wherein'like numerals are ein` end, the'tab'le 2l `is movalily indented upon the supporting l'structure '2U which-- com-prises" asub-` Vpreferably of angle .irons and supported upon vertical'posts 3|. L f r Extending longitudinal-1y or `tlie table and ro- "tatably .carried side members '3-2 of the supr w r r ,i

.prank levers 3'5 are pivoted' as at42 While the `liorizontalY legsi'dfi" of 'bell-crank levarsi-"i8` are jportin-g frame 20` are vthe spaced; parallel shafts.

@sans sa (Fi-asx: Fixed tothe shaft 33; adjacent its opposite" ends,` are'bellecrank levers `3`5 (only one'of` which isshown) "e'a'cli comprising a substantially vertical depending leg "36' and a substantially horizontal', relatively shorter' leg `3l.

prising a depenV ing' leg' 39 `ia""siubstantially Ahorizontal shorter leg 4U.

The table 2.I is' rectangularin'plan and has "secured tothe underside thereoi`,fspaced "brackets Il to which. the horizontal legs v3'1 of bell- "pivoted as at '4`3`to similar brackets 4'4 also carried upon theunderside of thetable.

@The depending legs .of bell-crank' levers 35 are connected together at their lower end's by a horizontal rod 45 and a similar rod 46 connects ing framework 20. The spring 48 tends to normally -urge the bell-crank levers in a clockwise direction to raise the table 2|, but it is not of suicient strength to alone effect such raising.

The means for raising the table top 2| includes links 58 connecting the rod 46 with a tubular member pivotally carriedat-itsopposite ends by the vertical hangers 52 and 53 pivoted at their will be permitted to'fall downwardly into lowered non-cutting position, the downward movement of the table ebeing cushioned` by the spring 48. The locking bar 58 may be guided in its vertical movement by a vertical strap 58 carried by supporting frame and having its lowerv end slotted to receive the'saidV bar therein.

When the table 2| has been raised. to the full line position of Fig. 2,' bringingthe4 cutting tool into operative engagement with the glass plate 22 (Fig. 3), the operator will move the cutting l c una 214 along the template 2a vupon which it is upper ends as at 54 and 55 to bracket plates '56 and 51 respectivelysecured to the front inember `58 of the supporting frame 20. Thus, when the tubular4 member 5| is forced inwardly, all

of thebell-crank levers will be simultaneously rocked in a` clockwise direction upon shafts 33 andy 34 to effect the desired raisingof the table 2|. This raising of the table will be assisted by the action of thespring 48which, 4as previously pointed out, always tends to raise, the table,r although ynot of suicient strength to alone effect such raising. K

The tableA 2| adapted to be maintained in raised position during the cutting of theglass plate, and, means is provided,I for locking the table in this position. There is provided for this purpose a horizontallocking bar 58, said bar being pivoted at its rear end as at 59 to a-bracket 60 carried by thesupporting frame 20 and provided at its forward end with a latch plate 6|, the undersurface 62 of which inclines rearwardly and downwardly. Associated withlthe locking bar 58 is a split collar 63 fitting around the tubular member 5| intermediateuthedends thereof and securedinplace by a screwor the like 64. The collar 63 is provided with a vertically projecting lug 65 which is adapted to cooperate with the laten plate el on the lockingpar 5s to look the table in raised position,Y t Y o Y o In operation, when the tubular member 5| is l moved inwardly to eect theraising of theY table l 2|, the lug 65 engaging the inclined bottom surface 62 of llatch. plate 6| will act to raise1 the locking bar 58, but just as soon as the 1ug 65 passes inwardly beyond latchpl'ate 6|,` the bar 58 will fall downwardly so that the latch plate 6| will be disposed in front of lug ,65 as shown lin Fig. 2, whereby to prevent lowering of the table until the locking bar 58 is again raised to release vthe lug 65. The release of the locking meanslisso be effected sb-y the operator after the cutting oper.- ation has been completed, whereupon the Vtable will move downwardly by its own weight. 'To this end, there is provided a chain 66 fastened at one end to a foot pedal 61 vandat its opposite end to land' a foot engaging portion13 at its outer end, lsaid `foot pedal being normally urged upwardly by a compression spring 14 positioned intermedi- 'ate the ends thereof.

Upon downward pressure upon the vouter end 13 of the foot pedal, thefforward end vo f the locking bar 58 will be lifted upwardly yto release the lugl 65 so that the table supported and guided to produce the coreline 26.

-The template 23 preferably consists of a relatively'narrow tra-ck of the desired shape and size arranged above the cutting table 2| and supportedi by j horizontal arms 15 having inverted U-shaped, ends 16 which lit over `a horizontal supporting bar 11 and are secured thereto -by set screws 18. The bar 11 is mounted in, spaced Vrelation above the `supporting frame k2|) upon posts 19. v A ,Y

As shown in Fig. 1, the cutting unit 24 liscarried at the outerend of a horizontal supporting arm hinged at its inner en d as at 8| to asecond horizontal arm 82 'which` is pivoted as at 83 t0 a bracket 84 mounted upon a platform85 carried by the supporting frame. 20.

Withy reference particularly to Figs. 1,3 and 4,

theqcutting unit 24 comprises a substantiallyrecn tangular-horizontal top plate 86 carrying, substantially centrally thereof, a vertical stem or bolt 81 which passes upwardly through thebearing 88 formed' atthe outer end of supporting arm 80. Encircling the bolt 81 within bearing are ball bearing assemblies 89 which facilitate the turning which is held in place bya lbushing 92.. Fitted in the upper end of the bearing 88 is a hand grip 93 which is adapted to be grasped by the operator in moving the'cutting unit Valong the template.

The horizontal top plate 86 of the cutting unit Visforrned, at one end thereof with a downwardly ektendingroller support 94 which lies adjacent one .s lde of the template 23, Said roller support includmg a` substantially horizontal portion 95 carrying 'ar freelyrotatableroller `96 adapted to engage the adjacentside edge ofthe template.

C Iarriedupon the underside ofthe top plate 86, ladjacent one `end thereof, are the opposed rollers 91 and 98 mountedupon vertical spindles 9,9 and |00 respectively, while carriedupon the underside of said topl plate adjacent the oppositeend thereof are similar. rollers l0 Vand* |02 positioned in line `with rollers A9,1 and V98 respectively. Slidably received between these pairs of rollers is a horizontai suce bar macposiuoned above'thetrackftemplate and extending at right angles thereto, said slide-bar being provided withgroove'snglll in its opposite side faces to receive` the rollers V91, 98 and |0|, |02 therein, as best illustrated in Fig. 4.

Secured upon the underside of the slide bar |83 at the outer end thereof is -a downwardly extending roller support |05 having a substantially horizontal portion |06 carrying a pair of spaced apart, freely rotatable rollers |01 and |08 which engage the adjacent side face of the track 23. e The roller 96 carried by roller support 95engages the opposite side face of the track at a pointintermediate The upper .end of bolt 81- terminatesv installations; for` example,l incases where thev a cutting tool mounted to travel along said template for scoring the plate, said cutting. unit coml prising relatively movable parts engaging Opposite is in loweredposition (broken -linesFig 2). The.

operator then raises, the table by pressing .the

`tubular member 5 inwardly until vtlietalble is locked in raised position (full lines Fig.` 2) and the cutting tool is inv cutting Iengagement With .theplate 22 (Fig. 3). VVABymeansl of the handle 93, 4l 1 e then movesfthe cutting unit 24 from right vto left -until the unit engages the `stop 28 after producing the score line 26. The glass plate is held in position during the cutting operation :by frictional `contact vitl 1 the felt top ofthe table 2|. @As soon asthecut has been completed, the

.operator steps on the footpedal 6l and the table drops toV lowered position, whereupon he starts the cutting unit 24 up.01 1 itsreturn travel With suflicient force to carry it lback to its original position, point, the ycutting-unit 24 will belengaged by the spring |36` and bumper 29 and its speed grad- Just before arriving at its starting ually Areduced until it comes into contact with thebolts |24 and |25 ofthe stop 2l. After striking the stop 2l, the cutting unit is' prevented `from ,moving away by thebinding action, on the arm A80, otthe spring Whichalso acts to retain the: unit in its position against thestop`2`| ready for the next cuttingjstrokeg; In the, meantime .the operator, haviriglishandsfreephas renoved the cut sheet, replaced Ait with another andmis ready, tomove Ythe table2| upinto cuttingposif tion again.

With vsuch an apparatus, it is possible foran operator to cut glass plates rapidly'andefliciently and with a minimum amount o f lost timel or mo'- tion. Further, au of the scqreiines will be'unlformly made and each one will start and stop at exactly the proper distance inwardly from the edge of the glassplate to, givena clean, accurate 4break and with practically no attention from the operator.

`It will be 'understood that title-jA apparatus olescribed above could be used f or straight line as Well as pattern cutting, that supporting and guiding means other than a .te1n'plate mig'ht be employed, and also thata stationary table 'couldbe used and the cutting v,tool moved downwardly in order togbring it into cutting `engagementwith the glass plate, Various otherfclianges in the shape, size and arrangement'of parts may be resorted toy without departingfrom the spirit of rclaimf if 1. I n a machine forcutting plates or sheets of plat'e for scoring the plate, and adjustable stop means associated withthe template and engageable by said cutting unit at oppositeends of its travel for limiting the movement of said cutting from moving over the edge ofsaidplate'. f

Inamachine for cutting plates o 'r sheets of glass or the like, means for supporting the .plate to be cut, a `track templatemounted above said unit in one direction to prevent the cutting tool :plate supporting means,a cutting unit including ing the same along a predetermined line of cut, stop means positioned in the path of said cuttingl unit and engageable thereby at one end of its travel for preventing the cutting tool from moving over the edge of the plate, and braking means engageable with the cutting unit for reducing the speed of said unit before it contacts said stop means. I

4. In a machine for cutting plates or sheets of glass or the like, means for supporting the plate to be cut, a cutting unit including a cutting tool mounted for movementv over said plate for scoring the same along a predetermined line of cut, stop means positioned in the path of said cutting unit and engageable therebyat one end of its travel for preventing the cutting tool from moving over the edge 'of the plate, and shock absorbing means engageable by the cutting unit before it reaches said stop' means. f

5. In a machine for cutting plates or sheets of glass or the like, means for supporting the' plate to |be cut, a cutting unit including a cutting tool mounted -for movement over saidV plate for scoring the same along a predetermined line of cut, stop means positioned inthe path of said cutting unit and engageable thereby at one end of its travel for preventing the cutting tool from moving over the edge of the plate, and retaining means engageable with the cuttingv unit for preventing rebounding of said unit after striking said stop means. l

6. In a machine for cutting plates or sheets of glass or the like, means for supporting the plate to be cut, a cutting unit including a cutting tool mounted for movement over said plate for scoring the same along a predetermined line of cut, stop means positioned in the path of said cutting unit and engageable thereby at one end of its travel for preventing the cutting tool Vfrom moving over the edge of the plate, and means en-v lmeans positioned in the path of said cutting unit and engageable thereby at one end of its travel for preventing the cutting tool from moving over the edge ofthe plate, shock absorbing and brakving means for taking the impact of the moving cutting unit and for progressively reducing the speed thereof until said unit engages the stop means, and means for retaining said unit in contact with the cutting stop means.

RALPH ARTHUR MUSTERED. 

